Respiration is a series of reactions in which energy is released from glucose glucose: A simple sugar made by the body from food, which is used by cells to make energy in respiration. Aerobic respiration is the form of respiration which uses oxygen. It can be summarised by this equation:
perturbation in Science. A small change in a physical system, most often in a physical system at equilibrium that is disturbed from the outside. Variation in a designated orbit, as of a planet, that results from the influence of one or more external bodies.
agÂ·iÂ·taÂ·tion. n. 1. The act of agitating or the state of being agitated. 2. Extreme emotional disturbance; perturbation. 3. The stirring up of public interest in a matter of controversy, such as a political or social issue. agâ²iÂ·taâ²tionÂ·al adj.